Episodic vs. Chronic Migraine

Migraines are a deeply painful, often debilitating form of headache. People who experience migraines often require prescription medication or medical treatments in order to cope with their symptoms. A simple over-the-counter headache pill is rarely effective for treating migraine. 

Migraines can be episodic or chronic. A typical episodic migraine (EM) can linger for hours. Several weeks or even months may pass between migraine episodes.